Download App

4. d and f- block elements — Chemistry STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceChemistry4. d and f- block elements1 Mark
MCQ
Which of the following is the weakest reducing agent
  • A
    $Zn$
  • ✓
    $Cu$
  • C
    ${H_2}$
  • D
    $Li$
✓

Answer

Correct option: B.
$Cu$
b
(b) $Cu$  as it comes after $H$  in electrochemical series. It has positive standard reduction potential thus does not provide electrons for reduction.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from 4. d and f- block elements→4. d and f- block elements — all question types→Chemistry STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The rate of the reaction, $2NO + Cl_2 \rightarrow 2NOCl$ is given by the rate equation rate $= k[NO]^2[Cl_2].$ The value of the rate constant can be increased by
→
Transition element makes complex compound due to
→
All form ideal solutions except
→
Cinnabar is an ore of:
→
$KMn{O_4}$ acts as an oxidising agent in the neutral medium and gets reduced to $Mn{O_2}$. The equivalent weight of $KMn{O_4}$ in neutral medium
→
The colour of $p-$amino azobenzene is
→
$2-$phenylethylbromide when heated with $\text{NaOEt},$ elimination takes place. No deuterium exchange takes place when the reaction is carried out in $\ce{C_2H_5​OD}$ solvent. The mechanism will be:
→
Which one of the following complexes will most likely absorb visible light?
(At nos. $Sc = 21 , Ti = 22, V = 23, Zn = 30$)
→
$CH_3-CH_2-I$ $\xrightarrow{{NaCN}}A\xrightarrow[{Partial\,hydrolysis}]{{^\Theta OH}}B\xrightarrow[{B{r_2}}]{{NaOH}}C,$ Product $'C'$ is
→
Select the reaction $NOT$ representing correct major product ?
→